5 4 3 2 1 REVISION HISTORY 17 PGOOD ITEMP1 VIN+ + + 5 BOOST3 ITEMP TG1 SW1 30 BG1 26 2 1 C25 D2 0.1uF CMDSH-3 TG2 28 SW2 29 BG2 GND CIN9 180uF 16V 19 C21 C22 1000pF 1000pF TG3 SW3 2 5 Q6 OPT VO-SNS+ BG3 D3 C26 0.1uF CMDSH-3 4 S2P VOUT R54 OPT R56 OPT VO-SNSE4 VIN R25 100 VIN SENS2N R24 100 SENS2P R23 100 SENS1N R22 100 VO-SNSCIN5 10uF 16V X5R TG3 S1N 4 CIN6 10uF 16V X5R B S3P 4 Q9 RJK0305DPB 1 2 3 C44 0.01uF 5 S2P (5.5V MAX) E13 Q10 OPT S3N L3 0.33uH SW3 VOUT BG3 C40 0.1uF C86 0.1uF OPTIONAL TEMPERATURE COMPENSATION NETWORK FOR DCR SENSING 4 Q11 RJK0330DPB R57 OPT 4 R59 OPT RSNS3 0.001 2010 X5R COUT8 330uF 2.5V SANYO + COUT9 330uF 2.5V SANYO SENS3N Q12 RJK0330DPB NOTE: + R58 OPT OPTIONAL DCR SENSING COUT7 100uF 6.3V 1 2 3 0 5 5 R21 100 1 2 3 SENS1P PLLIN EXTVCC R8 10 OPT DCR SENSE2 1000pF SENS3P 1.5V / 120A J4 SENS2N SENS2P S3N R26 100 TK/SS EXTVCC EXTVCC X5R + J3 COUT6 330uF 2.5V SANYO GND OPT Q8 RJK0330DPB S1P E10 COUT5 330uF + 2.5V SANYO COUT4 100uF 6.3V R55 22 C23 RSNS2 0.001 2010 S3P 0 R134 E3 R6 10 S2N L2 0.33uH 4 Q7 RJK0330DPB S2N PLLIN C VO-SNS+ 4 1 21 SENS3N R36 OPT CIN4 10uF 16V X5R ONLY APPLY LOAD FROM E3 TO E4 FOR VOUT 4 20 B E12 SENS1P VIN CIN3 10uF 16V X5R Q5 RJK0305DPB SENS1N OPT DCR SENSE1 VIN 27 R29 0 E2 TK / SS COUT3 330uF 2.5V SANYO VOUT J2 R35 + 1 2 3 36 3 MODE RUN 10 ILIM FREQ BG2 COUT2 330uF 2.5V SANYO 5 32 OPT Q4 RJK0330DPB PGOOD 5 CIN7 180uF 16V TG2 SW2 EXTVCC J1 CIN8 180uF 16V C24 D1 0.1uF CMDSH-3 31 R28 0 AVP VIN + VIN- 37 39 E1 GND 23 1 1 2 3 EXTVCC 2 Q3 RJK0330DPB 5 R4 66.5 33 DIFFOUT + 1 2 3 R92 66.5 BOOST2 COUT1 100uF 6.3V X5R R52 24 DIFFN DIFFP RSNS1 0.001 2010 5 4 AVP VIN 38 BG1 LTC3829EUHF D VOUT R53 OPT R51 OPT 1 2 3 DIFFOUT1 SW1 SENSE3- AVP ISET 12-01-10 S1N L1 0.33uH 4 12 2 R3 0 C 1 U1 SENSE3+ DIFFP TG1 ITH DATE JIAN L. S1P Q2 OPT 4 16V 25 R27 0 SENSE2- VO-SNSVO-SNS+ INTVCC1 C11 4.7uF VFB 11 ISET1 15 BOOST1 8 R7 4.87K C5 2.2nF TK/SS SENSE2+ 14 R9 27.4K VIN INTVCC 7 13 C4 22pF 7V - 14V 9 35 18 TK/SS APPROVED CIN2 10uF 16V X5R 4 C10 0.1uF R5 35.7K CLKOUT SENSE1- ITH1 R2 20.0K 34 6 CLK1 C72 OPT 16 PLLIN C1 100pF SENSE1+ R1 30.1K VO-SNS+ 4 Q1 RJK0305DPB VIN R10 2.2 R13 0 PLLIN R91 OPT VINF1 R124 OPT DIFFOUT1 PRODUCTION IFAST1 1 2 3 E9 DESCRIPTION 2 JP5 R123 0 R12 OPT VFB1 R90 0 3 INTVCC1 JP4 RUN 2 ON RUN REV 5 MODE 5 4 OFF 1 2 3 JP1 D 3 FORCE CONTINUOUS RUN R42 OPT C41 OPT 1 MODE 5 3 IFAST1 2 BURST / SYNC ECO __ CIN1 10uF 16V X5R 1 2 3 2 OFF STAGE SHEDDING VIN INTVCC1 5 R41 OPT 1 1% 1 2 3 100K 1 IFAST RUN ON VIN R11 INTVCC1 MODE 1 2 3 VIN SENS3P OPT DCR SENSE3 WHEN DCR SENSING IS IMPLEMENTED ITEMP1 SHORT RSNS1, RSNS2 AND RSNS3 INTVCC1 A R61 100K PGOOD PGOOD DO NOT STUFF R21-R26 R45 0 CUSTOMER NOTICE C51 OPT RNTC1 OPT INTVCC1 R47 28K E14 R60 OPT VINF1 4.5V < VIN < 5.5V 4 TECHNOLOGY AK JIAN L. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. HIGH EFFICIENCY 6-PHASE 120A STEP-DOWN SUPPLY 3 2 N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC SIZE ONLY 5 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. DATE: IC NO. REV. LTC3829EUHF 2 DEMO CIRCUIT 1675A Tuesday, January 11, 2011 SHEET 1 1 OF 3 A 5 4 3 2 1 R93 100K 1% VIN INTVCC2 CLKOUT CIN11 10uF 16V X5R 1 VINF2 R126 OPT R96 0 23 17 PGOOD ITEMP2 37 R131 0 VFB1 R132 0 B ITH1 R133 0 ISET1 BG2 30 BG4 26 2 1 5 SENS4P VIN VIN CIN13 10uF 16V X5R CIN14 10uF 16V X5R Q21 RJK0305DPB C79 D9 0.1uF CMDSH-3 C 27 4 28 SW5 29 BG5 Q22 OPT 4 S5P S5N L5 0.33uH PGOOD BOOST3 ITEMP GND 19 2 R108 0 IFAST2 VFB2 C81 C82 1000pF 1000pF TG3 SW3 BG3 1 D10 C80 0.1uF CMDSH-3 4 20 R109 OPT 4 Q23 RJK0330DPB 21 R110 OPT SENS6P R113 100 + COUT26 330uF 2.5V SANYO + COUT27 330uF 2.5V SANYO SENS5P S6N SENS6N COUT25 100uF 6.3V SENS5N Q24 RJK0330DPB R112 100 VOUT X5R OPT C83 RSNS5 0.001 2010 R111 22 OPT DCR SENSE5 VIN 1000pF VIN S6P ITH2 CIN15 10uF 16V X5R S5N SENS5N R114 100 SENS5P R115 100 SENS4N R116 100 S5P ISET2 TG6 4 Q25 RJK0305DPB S4N CIN16 10uF 16V X5R B S6P 4 Q26 OPT SW6 S6N L6 0.33uH 5 R117 100 RSNS6 0.001 2010 VOUT COUT28 100uF 6.3V + X5R COUT29 330uF 2.5V SANYO + COUT30 330uF 2.5V SANYO 1 2 3 R120 SENS6N SENS6P OPT DCR SENSE6 WHEN DCR SENSING IS IMPLEMENTED R121 0 C84 OPT DO NOT STUFF R112-R117 CUSTOMER NOTICE INTVCC2 R122 28K R135 OPT APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. RNTC2 OPT 4 R118 OPT Q28 RJK0330DPB SHORT RSNS4, RSNS5 AND RSNS6 A R119 OPT OPT OPTIONAL DCR SENSING NOTE: ITEMP2 4 Q27 RJK0330DPB 1 2 3 BG6 TEMPERATURE COMPENSATION NETWORK FOR DCR SENSING 5 S4P SENS4P VINF2 4.5V < VIN < 5.5V HIGH EFFICIENCY 6-PHASE 120A STEP-DOWN SUPPLY 3 2 N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 TECHNOLOGY AK JIAN L. ONLY 5 COUT24 330uF 2.5V SANYO 1 2 3 1 2 3 SW4 5 IFAST MODE RUN ILIM EXTVCC + 5 IFAST1 TG4 1 2 3 R130 OPT TG2 SW2 5 39 32 R107 0 AVP COUT23 330uF 2.5V SANYO OPT DCR SENSE4 31 DIFFOUT + SENS4N 5 4 EXTVCC BOOST2 COUT22 100uF 6.3V X5R 1 2 3 38 C77 D8 0.1uF CMDSH-3 DIFFN DIFFP OPT 1 2 3 DIFFOUT2 BG1 R101 OPT Q20 RJK0330DPB 5 OPT LTC3829EUHF ISET Q19 RJK0330DPB 1 1 2 3 R129 2 5 AVP 33 1 2 3 2 TG1 SW1 SENSE3- R128 OPT 1 24 12 DIFFP VO-SNS+ 15 U2 R100 OPT 4 RSNS4 0.001 2010 VOUT R103 R104 0 ITH 4 25 VFB SENSE3+ VO-SNS- VO-SNSC ISET2 BOOST1 SENSE2- C78 22pF C85 OPT TK/SS 11 14 R106 27.4K FREQ PLLIN 13 INTVCC 8 R105 OPT TK/SS ITH2 VIN CLKOUT SENSE2+ R127 OPT 9 7 C76 OPT 34 SENSE1- CLKOUT 6 VFB2 SENSE1+ C75 OPT S4N L4 0.33uH 5 36 3 10 35 16 C74 4.7uF INTVCC2 16V R102 OPT S4P 5 R98 30.9K VO-SNS+ 18 VO-SNS+ 4 Q18 OPT C73 0.1uF CLK1 OPT 4 Q17 RJK0305DPB 1 2 3 R99 D VIN R95 2.2 5 DIFFOUT2 CIN12 10uF 16V X5R 3 JP6 R94 OPT D R97 OPT 2 ON R125 0 5 INTVCC2 OFF 1 2 3 RUN 1 2 3 E11 VIN IFAST2 IFAST2 MODE DATE: IC NO. REV. LTC3829EUHF DEMO CIRCUIT 1675A Wednesday, February 23, 2011 SHEET 2 1 2 OF 3 A 5 4 3 D4 MMBZ5231BLT1G 1 3 2 1 DYNAMIC LOAD CIRCUIT +12V TRIG E17 3 3 DLC ON 2 OFF 3 3 + 2 LT1361CS8 1 U5A 1 Q13 FMMT619/SOT 3 R73 OPT LT1361CS8 VOUT JP2 2 1 C60 0.47uF 6 7 R76 1K 8 VR1 LT1004CS8-1.2 3 2 3 Q16 FMMT718/SOT C 4 2 5 SUD50N03-10 Q14 2 C57 0.01uF 2 COUT10 1uF 485 R74 POT 50K SLOPE UP U3 TLC555ID C56 0.1uF R75 7.5K 4 R77 POT 50K C59 OPT IMAX ADJ VOUT J5 C3 1uF 1 1 7 1 C58 0.01uF C55 0.1uF 8 5 + U5B 6 - 2 +12V C53 0.1uF D VOUT C54 4.7uF 2 8 VDD TRIG RSET DSCH THRES OUT CON +12V R69 390K SLOPE DOWN R71 POT 50K D5 BAT54S GND R72 1.5K 2 4 7 6 5 1 R70 110K E5 +12V +5V C69 0.1uF +12V C52 100pF D + - 6 3 C61 4.7uF 7 U7 LT1210CR 1 1 3 3 J6 R78 2K 1 COUT11 1uF Q15 SUD50N03-10 R79 0.010 5% R80 0.010 5% R81 0.010 5% C62 0.1uF R82 0.010 5% -12V E6 VIN L8 10uH CMD4D08-100MC +12V PGND E7 1 D6 B0540W-7 DLC BIAS 1 ON 2 E8 OFF VIN B C65 4.7uF 1 VIN 4 R83 115K SW SHDN FB 3 3 R84 13.3K GND C67 JP3 1uF PGND VOUT COUT16 COUT17 COUT18 COUT19 COUT20 COUT21 C64 10pF C66 4.7uF L7A 10uH S2275315 -12V OPT 6.3V X5R COUT12 COUT13 COUT14 COUT15 COUT31 COUT32 COUT33 COUT34 + OPT 2.5V SANYO B 4 +5V U4 LT1930ES5 5 1 +5V C -12V C63 1uF 2 LOAD STEP 2 L7B 10uH S2275315 3 2 PGND 1 D7 C68 4.7uF LOAD STEP: 1. TURN ON DLC BIAS AN DLC 2. ADJUST R77 FOR LOAD AMPLITUDE 3. ADJUST R71, R74 FOR RISE/FALL TIME 2 B0540W-7 -12V OPTIONAL 5V BIAS +5V U6 LT1761ES5-SD VIN A 1 C70 10uF 16V 2 3 IN OUT 5 GND SHDN R87 R88 0 OPT ADJ EXTVCC 4 CUSTOMER NOTICE R85 R86 30.1K C71 10uF 16V OPT 4 TECHNOLOGY AK JIAN L. R89 10K HIGH EFFICIENCY 6-PHASE 120A STEP-DOWN SUPPLY 3 N/A SCALE = NONE 2 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. DATE: IC NO. LTC3829EUHF REV. 2 DEMO CIRCUIT 1675A Wednesday, February 23, 2011 SHEET 3 1 OF 3 A